Beidou-three-carrier-based signal single epoch method for determining dynamic-dynamic ambiguity

A determination method and ambiguity technology, which is applied in the field of motion ambiguity single epoch determination algorithm, can solve the problems of short baseline distance, unguaranteed reliability and poor real-time performance in determining ambiguity, so as to increase quantity and quality, ensure Reliability, the effect of increasing reliability

Inactive Publication Date: 2015-12-23
WUHAN PANDASHIKONG SCI & TECH
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Problems solved by technology

[0006] The present invention mainly solves the problems that the baseline distance of dual-frequency dynamic determination ambiguity is short, the real-time performance is poor, and the reliability cannot be guaranteed in the existing dynamic positioning technology; the use of triple-frequency signals provides a real-time and reliable short-distance dynamic determination method. Single Epoch Method for Locating Ambiguity

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  • Beidou-three-carrier-based signal single epoch method for determining dynamic-dynamic ambiguity
  • Beidou-three-carrier-based signal single epoch method for determining dynamic-dynamic ambiguity
  • Beidou-three-carrier-based signal single epoch method for determining dynamic-dynamic ambiguity

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[0030] In order to facilitate the understanding and implementation of the present invention by those of ordinary skill in the art, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the implementation examples described here are only used to illustrate and explain the present invention, and are not intended to limit this invention.

[0031] Please see figure 1 , Is the overall flow chart of dynamic positioning of the embodiment of the present invention, in which the Beidou base station obtains the base station coordinates of the epoch through single-point positioning.

[0032] Please see figure 2 The method for determining the dynamic ambiguity of Beidou three-frequency single epoch provided by the present invention includes the following steps:

[0033] Step 1: Determine the ambiguity N of the ultra-wide lane (0,-1,1) ; Its specific implementation includes the following sub-steps:

[0034]

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Abstract

The invention discloses a Beidou-three-carrier-based signal single epoch method for determining dynamic-dynamic ambiguity. With the method, problems that the baseline distance is long, the real-time performance is poor, and reliability can not be guaranteed during double-frequency dynamic ambiguity determination according to the existing dynamic-dynamic positioning technology can be solved. With the three-frequency signal of the beidou, a single epoch method for determining short-distance dynamic-dynamic positioning ambiguity reliably in real time is provided. On the basis of a geometry-based mode, certain observation value quality control is carried out by combining an M-W geometry-free model; and the ionosphere residual of the short baseline is ignored and the ambiguity is determined by steps. The method mainly comprises three steps: (1), determining ultra-wide lane ambiguity N(0,-1,1) by using an original pseudo range and an ultra-wide lane phase observation value; (2), determining two wide lane ambiguity values N(1,0,-1) and N(1,-1,0) by using the ultra-wide lane observation value; and (3), determining ambiguity values N1, N2, and N3 of three original frequencies by using the wide lane observation value. Therefore, ambiguity of dynamic-dynamic positioning of the short baseline can be determined reliably in real time.

Description

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Application Information

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Owner WUHAN PANDASHIKONG SCI & TECH
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